4
About this manual
Pictograph
definitions
Instructions in the
text
Work instruction: here you have to do something.
Abbreviations used
DCU:
Display and control unit
HPU:
Handheld programming unit
TC:
Electronic drive unit for turbopump
TPS:
Mains
pack
Symbols used
The following symbols are used consistently throughout the diagrams:
High vacuum flange
Fore-vacuum flange
Electric connection
Cooling water connection
Venting connection
Sealing gas connection
Prohibition of an action or activity in connection with a source of danger,
the disregarding of which may result in serious accidents
Warning of a displayed source of danger in connection with operation of
the unit or equipment
Command to perform an action or task associated with a source of dan-
ger, the disregarding of which may result in serious accidents
Important information about the product or this document
